A/C "Whistling"

[monsterenergy]

Well, today I started the hoor of a job of removing the complete front dash from the missus' Maserati to get in aboot the heater core/matrix which I am pretty sure is leaking. So of course there are some bvggerin difficult screws to get at - and as I jump into the Scooby to drive to b&q to buy a socket set I put on the air conditioning cos I was hot and bothered lol.

And... bloody hell if the hatch isn't making a whistling noise when the AC gets put on. Seems to be coming from behind the centre vents.

Just what I need would be another "dash off" repair job on my hands - but this time on my beloved Scoob.

Any ideas? Could it just need a gas recharge? Or could the cold weather have done something? Could it be a perished hose?

Any thoughts or ideas appreciated... of course I'm about 6 months out of warranty now <doh>

Thanks

Edited February 24, 2012 by monsterenergy

[badbaz]

Probably daft question, cause if you're gonna take the dash out a Maserati!!!! .....

Is the noise only when A/C on, not fan at any speed, hot or cold?

[monsterenergy]

Probably daft question, cause if you're gonna take the dash out a Maserati!!!! .....

Is the noise only when A/C on, not fan at any speed, hot or cold?

Yep - only when AC is on... it kinda sounds like it "spools up" when AC button pressed, then "winds down" when off again.

p.s. I probably am daft taking the dash oot a Maserati haha - but they were quoting £2900 to repair the heater core! :-o But I don't think I'll be scared to tackle many jobs on the car when/if I finish this one!

Edited February 25, 2012 by monsterenergy

[badbaz]

Can air con be on and temp be set at any position on yours?

Taking the dash out won't be that hard, it's more IF you don't break clips.....

[monsterenergy]

Can air con be on and temp be set at any position on yours?

Aye - it can.

It kinda sounds like soft whistle - ken like if somebody had a speech impediment, like the guy in Chewin' the Fat who made a whistlin' noise when he spoke.

[badbaz]

Six sliced sausage?

Perhaps the flap that opens/closes for the a/c evaporator isn't fully closing? Wonder if leaves or anything can get in there? Unlikey with pollen filters these days though. I take it much fiddling with knobs hasn't got it cured?